An IT company is using AWS Infrastructure in the us-west-1 region for deploying application servers across multiple VPC. Recently this company has expanded its geographical presence & acquired two startup firms in the Singapore & Sydney region. Since there is no dedicated bandwidth requirement, a secure VPN connection is established from these offices to VPC in the us-west-1 region to allow users in remote offices to access applications. Users are complaining of slow access to applications which is impacting their work &, in turn, affecting business. The CTO of this company is looking for performance improvement which should enhance remote user experience while accessing these applications.
Which of the following solutions can be deployed quickly if cost is not a constraint?

Answer options:

A.Create an AWS Direct Connect connection in each Singapore & Sydney region. Create a VPN connection over this link to VPC in the us-west-1 region.
B.Create an attachment from each VPC in the us-west-1 region to AWS Transit Gateway. Delete existing VPN connection from Singapore & Sydney office & create a new VPN Connection with attachments to transit gateway with acceleration enabled.
C.Create AWS Direct Connect connection in each Singapore & Sydney region with Private VIF associating with AWS Direct Connect gateway. Associate this AWS Direct Connect gateway with VPC in the us-west-1 region.
D.Create a new VGW in each VPC in the us-west-1 region. Delete existing VPN connection from Singapore & Sydney office & create a new VPN Connection to VGW in each VPC at us-west-1 with acceleration enabled.

Correct Answer – B
VPN connections with acceleration enabled use AWS Global Accelerator to improve performance of VPN tunnels. With acceleration enabled, VPN tunnels are formed with static IP address of nearest edge location & from edge location traffic is moved over AWS global backbone infrastructure to reach VPC in the destination region. A transit gateway is required to be created as Accelerated VPN connections only support termination on transit gateway & not on Virtual private gateway.
Options A & C are incorrect as there is no dedicated bandwidth requirement. Using AWS Direct Connect links is not the best option.
Option D is incorrect as VPN Connection with acceleration is not supported with virtual private gateway & is supported only as an attachment with transit gateway.
For more information on Accelerated VPN connection with AWS Global Accelerator, refer to the following URL
https://aws.amazon.com/blogs/architecture/improve-vpn-network-performance-of-aws-hybrid-cloud-with-global-accelerator/